Answer
$4; 4$
Work Step by Step
The given expression is
$\sqrt{16}$
$=\sqrt{4^2}$
$=|4|$
$=4$
and
$\sqrt{(-4)^2}$
$=|-4|$
$=4$
Hence, the correct fill in blanks are $4$ and $4$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.10 nth Roots; Rational Exponents - A.10 Assess Your Understanding - Page A87: 2
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